European stocks increased on Friday rising for the third successive day and were set to advance the most in a week since April mainly due to a notable gain of ING Groep NV and Banca Monte dei Paschi di Siena SpA. The benchmark index Stoxx Europe 600 Index surged 0.5% to 321.11 as of 4:38 p.m. London time and it added 3.7% this week on Fed's decision to trim its stimulus.